Express the confidence interval 0.307 ± 0.058 in the form of

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0.307 is the Mean.

0.058 is nothing but 0.307 - (lowest value)

Let the lowest value be -x

0.058= 0.307 - (-x)

0.058 = 0.307+x

x= 0.058-0.307

Hence lowest value = - 0.249

Let the highest value be y

-0.249 + y /2 = Mean

-0.249 + y /2= 0.307

-0.249 + y = 0.614

y = 0.863

- 0.249 < p < 0.863

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